This book consists of 200 difficult puzzles of a variety of different types focussing on pattern puzzles of all types. Questions include mathematical and alphabetical ciphers, as well as shape and geometric patterns. Puzzle artworks and full-colour illustrations are included throughout.

A colorful collection of the most difficult pattern based puzzles on the market, compiled by Mensa puzzle setters.

A colorful collection of the most difficult geometric based puzzles on the market, compiled by Mensa puzzle setters.

This best-of compilation features 101 of the most entertaining and challenging math puzzles ever published. No advanced knowledge of mathematics is necessary, just solid thinking and puzzle-solving skills. Includes complete solutions.

Achievement and Motivation was originally published in 1993. It provides a comprehensive review of research conducted on the topic in the late 1980s and early 1990s. Most particularly, it focuses on the research of those in the field who tackle the issue from a social-developmental perspective.

Fully illustrated in color, this treasure trove features 250 puzzles on every imaginable theme and subject. The book is a bonanza of mazes, word games, visual and logic puzzles, and more.

The noted expert selects 70 of his favorite "short" puzzles, including such mind-bogglers as The Returning Explorer, The Mutilated Chessboard, Scrambled Box Tops, and dozens more involving logic and basic math. Solutions included.